Pressure and drawing cylinder for spinning machines



April 3, 1928. 1,665,136

J. LAUFFER PRESSURE AND DRAWING CYLINDER FOR SPINNING .MACHINES Filed June 15, 1925 a q Il IIIMIIIIIIIIITMZ llt) Patented Apr. 3, 1928.

vUNITED STATES-PATENT OFFICE.

JEAN LAUFFER, OFLQGELBACH, FRANCE.

PRESSURE AND DRAWING CYLINDER FOR SPINNING MACHINES.

Application filed .Tune 15, 1925, Serial Non. 37,360, and in France J'une 20, 1924.

'ihe present. invention relates to an improveinent in pressure cylinders and drawing cylinders ol spinning machines, and the main object oi'- the invention is to remove tbe serions drawbacks resulting from the l'act that the spindles ot' the pressure cylinders ot' spinning machines require to be lu-' bricated very frequently, i. e. daily, at several points. lbe labour entailed by this lubrication. ii

seientiously, is very considerable in View of the large number o'lE spindles tio be lubricated. For this reason the said lubrication is ol'ten neglected and as a result irregularities occur in the twisting of the thread owing' to slower rotation of one or the other of tbe pressure rollers. Even it' the Considerable labour required daily to carry out the aforesaid lubrication, a careful lubrication ba.: very serious drawluuks; indeed, as it is pi'zu-tit-.ally impossible to provide each of the spindles exactly with the required and suliicient quantity oi lubricant, it occurs almost continually that the overflowing lubricant soils the lining of the pressure cylinders and there'l'ore indirectly the thread, or even directly the latter.

Similar dra wbaeks are met in drawing cylinders. 'l`he overflowing lubricant covers tbe grooved cylinder and soils the thread and the pressure cylinder when the drawing cylinder is removed, which has to be done ll'reipiently. while. when the cylinder is replaced in position, thread waste or iiuii' is liable to penetrate into the bearings of the spindle.

.firrnrding to the present invention, the method ot' lubricationapplied heretofore is replaced by a continuous and automatic lubrication. This principle may be carried out in practice by arranging the pressure or drawing cylinder in such a manner tliat it will be enabled tio rotate on the spindle and by forming' withinthe said cylinder a fluid light cavity or 'lubricating chamber capable ot containing a relatively considerable qualitity of lubricating material. In order to reduce friction, ball or roller bearings are pre'l'- erably interposed in known manner between the cyli nder and the spindle.

'lbe novel arrangement just referred to only ai'l'ects the lubrication of the pressure and the drawing cylinder, and entails no change either in the operation of the Said cylinders or in the adjacent devices.

y 'section and an end view of a it is to be carried out conln order that the invention may be readily understood, selected embodiments of the saine are, by way of example only, illustrated by the accompanying drawing, wherein:

1 represents a. pressure cylinder according to the invention, one of the two Cylinders beingr shown in longitudinal section.

Figures 2 and 3 are respectively a cross nut provided tor the purpose of adjusting the cylinder on the' spindle.

Fig. 4 illustrates in longitudinal section the application of the invention to a drawing cylinder, and

Fig. 5 is a longitudinal section of a, modified embodiment of a pressure cylinder according to the invention.

Referring first to Figures l to 3, a indicates the stationary spindle, of Which the two ends a1 are carried by supports of any suitable known construction; The pressure cylinder o is covered with a felt'llning c, which is usually covered in turn with leather or parchment paper. The cylinder b is made hollow and is capable of rotating on the spindle a.; it is mounted on two annular ball l'iearings Z1 and (Z2, ball race is constituted by the inner surface of thecylinder 7) while' the inner ball race is constituted by the spindle a. The two ballbearings are made of tempered steel.

The chamber e formed within the cylinder 7) is closed by means of a nut f which has its inner tace g formed as an annular abutment for the adjacent ball bearing d1 and serves for adjusting the position of the cylinder in relation to the ball bearin s, and consequently to the spindle,v in the irection of the longitudinal axis of the latter. The chamber or cavity e is lled with lubricant, and two Huid tight packings h1 and L* prevent the escape of the said lubricant as Well as the penetration of fluff. In View ofv the fact that the nut 7 constitutes a means of adjustment, it is provided with means for locking same in adjusted position, the said means consisting of a segment 1 which; owing to the provision of a slot z', may be pressed tight against the threads of the corresponding end'of the cylinder b by means ot a screw Z.

Fig. 4 illustrates the application of the invention to a. drawing cylinder. The lubri-y eating chamber m is here formed on the one hand by the inner surface of the cylinder of which the outer o a pressure roller, wherein n which constitutes the outer ballrace of two ballbearin o1 and o, and on the 'other hand by a tubu ar sleeve p surrounding the end portion 1' of the spindle and forming the inner ball race of the two ball gearings just referred to, the said sleeve p extending practically along the whole of the lengt of the cavity m and being secured on vthe said end portion r of the spindle by means of a ub screw g, without preventing the y cylin er a from being removed when needed. i

A stopper and adjustment nut s, similar to the `nut f shown inFig. 1 and provlded with a means for locking same in position, is screwed into theA inner end of the cylinder a. Fig. 5 illustrates a modified embodiment the outer ball races of the ball bearings u are constituted by two suitably recessed nuts t screwed into according to the cylinder and maintained in position by means of lock nuts lv. The lubricating material is introduced into the cavity or lubricatin Vchamber fw by way of a conduit m bore axially and radially in the spindle y. Fluid tight packings .e prevent the lubricant from escaping om the cavity w. l

Owin to the provision and the arrangement o the ball bearings, the construction the invention oers many advanta es, amon which may be cited:

onsiderab e economy in the power required to operate the machine;

2. Economy or lubricant;

3."Economy, practically amounting to y tion of thespindle and extending substantially along the whole length of the cavity of the hollow cylinder; a pair of ball-bearings interposed annularly between the said tubular sleeve and the inner surface of such hollow cylinder; a nut screwed into one end'of the said cylinder for adjusting the position of the latter on the end-portion of the spindle in a longitudinal direction, the said nut having its inner face adapted to form an annular abutment'for the adjacent ball-bearing; and means for locking the said nut in adjusted position.

ln testimony whereof I signed hereunto my name.

JEAN Lamina. 

